lkml.org 
[lkml]   [2004]   [Apr]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: -mmX 4G patches feedback [numbers: how much performance impact]
On Tue, Apr 06, 2004 at 10:25:48PM +0200, Andrea Arcangeli wrote:
> I'm using DOUBLE. However I won't post the quips, I draw the graph
> showing the performance for every working set, that gives a better
> picture of what is going on w.r.t. memory bandwidth/caches/tlb.

Here we go:

http://www.kernel.org/pub/linux/kernel/people/andrea/misc/31-44-100-1000/31-44-100-1000.html

the global quips you posted indeed had no way to account for the part of
the curve where 4:4 badly hurts. details in the above url.

Please cross check my results on your hardware (I used a 2.5Ghz xeon, 1G
of ram, and benchs run fresh after boot with all ram still free).
Numbers are perfectly reproducible for me, and they make perfect sense
too. 2.6.5-aa4 is the same as 2.6.5-aa3 for this benchmark (though I'll
upload 2.6.5-aa4 in a few hours).
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:02    [W:0.092 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site